1 #ifndef __MLX5E_ACCEL_H__ 2 #define __MLX5E_ACCEL_H__ 3 4 #ifdef CONFIG_MLX5_ACCEL 5 6 #include <linux/skbuff.h> 7 #include <linux/netdevice.h> 8 is_metadata_hdr_valid(struct sk_buff * skb)9static inline bool is_metadata_hdr_valid(struct sk_buff *skb) 10 { 11 __be16 *ethtype; 12 13 if (unlikely(skb->len < ETH_HLEN + MLX5E_METADATA_ETHER_LEN)) 14 return false; 15 ethtype = (__be16 *)(skb->data + ETH_ALEN * 2); 16 if (*ethtype != cpu_to_be16(MLX5E_METADATA_ETHER_TYPE)) 17 return false; 18 return true; 19 } 20 remove_metadata_hdr(struct sk_buff * skb)21static inline void remove_metadata_hdr(struct sk_buff *skb) 22 { 23 struct ethhdr *old_eth; 24 struct ethhdr *new_eth; 25 26 /* Remove the metadata from the buffer */ 27 old_eth = (struct ethhdr *)skb->data; 28 new_eth = (struct ethhdr *)(skb->data + MLX5E_METADATA_ETHER_LEN); 29 memmove(new_eth, old_eth, 2 * ETH_ALEN); 30 /* Ethertype is already in its new place */ 31 skb_pull_inline(skb, MLX5E_METADATA_ETHER_LEN); 32 } 33 34 #endif /* CONFIG_MLX5_ACCEL */ 35 36 #endif /* __MLX5E_EN_ACCEL_H__ */ 37
